31485740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 79168320

約数和(自身を除く): 47682580

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 101, 109, 110, 130, 143, 202, 218, 220, 260, 286, 404, 436, 505, 545, 572, 715, 1010, 1090, 1111, 1199, 1313, 1417, 1430, 2020, 2180, 2222, 2398, 2626, 2834, 2860, 4444, 4796, 5252, 5555, 5668, 5995, 6565, 7085, 11009, 11110, 11990, 13130, 14170, 14443, 15587, 22018, 22220, 23980, 26260, 28340, 28886, 31174, 44036, 55045, 57772, 62348, 72215, 77935, 110090, 121099, 143117, 144430, 155870, 220180, 242198, 286234, 288860, 311740, 484396, 572468, 605495, 715585, 1210990, 1431170, 1574287, 2421980, 2862340, 3148574, 6297148, 7871435, 15742870, 31485740]

約数ペア:

[(1, 31485740), (2, 15742870), (4, 7871435), (5, 6297148), (10, 3148574), (11, 2862340), (13, 2421980), (20, 1574287), (22, 1431170), (26, 1210990), (44, 715585), (52, 605495), (55, 572468), (65, 484396), (101, 311740), (109, 288860), (110, 286234), (130, 242198), (143, 220180), (202, 155870), (218, 144430), (220, 143117), (260, 121099), (286, 110090), (404, 77935), (436, 72215), (505, 62348), (545, 57772), (572, 55045), (715, 44036), (1010, 31174), (1090, 28886), (1111, 28340), (1199, 26260), (1313, 23980), (1417, 22220), (1430, 22018), (2020, 15587), (2180, 14443), (2222, 14170), (2398, 13130), (2626, 11990), (2834, 11110), (2860, 11009), (4444, 7085), (4796, 6565), (5252, 5995), (5555, 5668)]